Tension device for shuttles.



B. BURGESS- 1 TENSION DEVICE FOR SHUTTLES. APPLICATION rum) NOV. 19, 1913.

' Patented 861115.22, 1914,

v shuttle, showing my improved tension de- I ERNEST BURGESS, OF NORWALK, CONNECTICUT.

TENSION DEVICE FOR SHUTTLES.

Specification ofLetters latent. Pat en ted Sept, 22, 1911 4,

Application filed November 19, 1913. Serial No. 801,936.

To all whom it may concern:

Be it known t at 1,.EnxssrBnRosss, a' citizen of the United States, residing at Norwalk, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements. .in Tension Devices for Shuttles; and I do hereby de-. clare thefollowing to exact description of the invention, such asbe a full, clear, and

will enable others skilled in the art to which it appertains to make and us'e the same.

This invention relates to improvements in tension devices for shuttles and has for its primary object to provide .a simple and practical means of this-nature which will apply an even pressure along the entire length of the bobbin and prevent the yarn or silk flying over the ends of the spool and becoming snagged.

The spools or bobbins now commonly used in connection with'loom shuttles are headless and I aim to provide a tension device including a rectangular brake or thumb-bit and a spring for holding the thumb-bit in operative position, said parts being especially adapted for use in connection with bobbins of the beforementioned construction.

The invention also aims to generally improve tensiondevices of this nature, to render'them more useful, practical and commercially desirable.

With these and other objects in view as will become more apparent as the description proceeds, the invention consists in certain novel features of construction, combination and arrangement of parts as will be hereinafter more fully described and claimed.

1 For a complete understanding of my'invention, reference is to be had to the following description and accompanying draw ings, in which- Figure 1 is a front elevation of a ribbon vice in position thereon. Fig. 2 is a horizontal sectional view taken on the plane of line 2-2 of Fig. 1, Fig 3 is a transverse sectional view taken on. the plane of line 3-3 of Fig. 1, Fig. 4 is a perspective view-of the brake or, thumb-bit, and Fig. 5 is a perspective view of the supporting rod and spring.

Referring in "detail to the drawings by numerals, 6 designates, as an entirety. a shuttle of a'common formation having the loom v main bar 7 and recessed wall 8 and no claim is made to this structure.

'9 is the spindle for the bobbin 10, and 11.

designates the roll of yarn or silk which is wound on the bobbin, and-which is drawn ofl through the usual eyes 12.

In the preferred embodiment of my invention, I provide a rectangular brake plate or thumb-bit 13 formed of sheet metal and provided along its longitudinal edges with the oppositely turned flanges 14 and 15. The plate is slit transversely across its upper edge adjacent one extremity thereof and the metal l'ing between said slit and the near end 0 the plate -bent forwardly to 'rovide a keeper 16 having one corner of its forward wall inturned, .as indicated by the n meral 17. The brake plate is supported y means of a wire rod 18 which extends through the sleeve formed by the flange 15 and behind the kee er 16. One end ofthe rod 18 is bent angu arly, as indicatecl by the numeral 19 and a spring arm 20 is integrally formed on the other end of the rod 18. The free end of the arm 20 is bent to form an, angular book 21 lying in a plane extending at right angles to the main portion of the arm. The shuttle body is formed with and 23' opening upon the forward face thereof and upon the hollow portion of theshuttle and the ends of the supporting rod 18 are disposed within these slots so that the rod' extends parallel to the upper wall of the shuttle openingm A locking spring 24 is secured to the body by having its extremities inserted within openings 25 communicating slots 22 with the slots 22 and 23 and serves to prevent an accidental displacement of the tensioning device. A clip 26, formed by bending a piece of sheet metal back upon itself,

is attached to one extremity of the supportinto engagement with the keeper 16 and swings the plate 13 into engagement with the rear .side of the roll of yarn or silk carried on the bobbin 10. The hook 21 is prevented from-slipping out of engagement with the keeper 16 by the inturned' corner 17 of v the latter. The spring arm 20 exerts a forward and upward pressure on the keeper l6 and since the latter is disposed to one side of the pivot rod 18, the plate 13 tends to swing about the pivot rod toward the bobbin.

From the foregoing description taken in connection Withthe accompanying drawings, it will be apparent that I have provided a very simple and practical tensioning device for shuttles which may be very cheaply inanufactured and quickly assembled in operative position.

While I have shown and described the preferred embodiment oi? my invention, it will 15 be understood that minor changes in construction, combination and arrangement of parts. may be made without departing from the spirit and scope of the invention claimed. j Having thus described my invention, 1 claim i 1. In a shuttle, a tensioning device including a pressure Hate, a.- supporting rod extending parallel to the shuttle spindle in advance thereof, the pressure plate being hinged to said rod, and a spring arm integral with one end of the supporting rod and engaging the pressure plate to svving it 'toward the bobbin.

2. In a shuttle, a tensioning device including a pressure plate, a keeper formed upon one edge of said plate and lying to one side of the plane'of the plate, a supporting rod to which said pressure plate is hinged, and a spring arin integral with one end oi the supporting rod and engaging said keeper to exert a forward and upward pressure thereon whereby the pressure plate will be swung toward the bobbin. V

The colnbinationfwith a shuttle formed with a pair of slots opening upon the front wall and upon the central portion of said shuttle, of a tei'ision-oevice including a supporting rod having its extremities secured- Within said SlOtS, a rectangular pressure plate hinged along one longitudinal edge of said rod, a keeper formed upon said plate and a spring; arm formed integral with the rod and engaging said keeper to 'siving the pressure'plate toward the bobbin.

In testimony whereof I affix my signature in presence of two Witnesses.

'' ERNEST nnnenss.

V lvitnc ssesz Jos cPH T. REILLY, RaLrir BnnIsLEn. 

